* Atagema spongiosa (Kelaart, 1858) Figure 12B

Material examined.

One specimen 95 mm, CB.

Ecology.

Observed upon prey sponge Dysidea sp. in deeper soft sediment habitats. Depth 14-24 m.

Distribution.

Gulf of Oman (Fatemi and Attaran 2015), Red Sea (Yonow 2008), India (Apte et al. 2010), Sri Lanka (Kelaart 1858), Australia (Nimbs and Smith 2016), Fiji (Brodie and Brodie 1990), Madagascar, Singapore, the Philippines, South Korea, and Papua New Guinea (Gosliner et al. 2008). Here representing a first record for Thai waters.